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      02-11-2012, 04:51 PM   #63
rackley
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Drives: 2009 335i E90
Join Date: Aug 2010
Location: Charlotte, NC

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Quote:
Originally Posted by noro View Post
I tried to explain this a while ago to numerous people and I can't see to get through.

Unless the dyno takes into consideration all gear ratios, rear end ratio, overall wheel size and weight those numbers could be just as effective as if I just pulled them out of the hat.
+1.

You can take the same vehicle from one dyno to another and it can read 20hp different. The best comparison for car vs. car on wheel dynos is to do both cars at the same dyno back to back, otherwise you are always playing the "correction" guessing game.
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